Michael Buble is Engaged!

Michael Buble (34) is not single anymore! The singer reportedly popped the question to his Argentinian girlfriend over the holidays.

Sources tell Star magazine Michael proposed to 22-year old Luisana Lopilato with a Tiffany ring, and she tearfully accepted.

"He proposed in Argentina, in front of Lu's whole family," a close pal says. After the engagement, Michael reportedly whisked his fiancé off to Hawaii, where they stayed in a Maui beachfront mansion owned by friends.

The friend says the couple are thinking of tying the knot sometime next year.